Smoke has been impacting eastern Colorado for most of this week. Today, smoke has begun moving into counties west of the Divide. We'll break it down, starting in the northwest corner of the state.
Northwestern Colorado is experiencing the heaviest smoke. Purple Air sensors show that particulate matter concentrations began rising on Friday afternoon. This smoke is expected to linger Friday night into early Saturday morning. An Air Quality Health Advisory is in effect for Moffat, Routt, Jackson, and Grand Counties through Saturday morning.
Further south, in Eagle, Summit, Gilpin, and Clear Creek Counties, smoke is less intense. There will be noticeable haze along I-70 on Friday afternoon and Saturday morning.
On the Front Range, the heaviest period of smoke is behind us. Particulate Matter concentrations are expected to be in the Moderate category throughout the weekend.
Air quality is expected to improve next week, as upper-level winds shift and smoke clears out.
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